Spy Shots: Mystery Lexus LS caught lapping the 'Ring

If the newly improved 2013 Lexus LS is aimed at taking on the Mercedes-Benz S-Class, then it sounds like Lexus might have a new model in mind to take on the monstrous S65 AMG. Motor Authority has images of what it claims to be a wind tunnel prototype for a souped-up LS we first saw testing on the Nürburgring a couple years ago. We already knew this car was being developed by Toyota Motorsport GmbH (TMG) which could become a factory tuner arm for Toyota like AMG, and the report says that the

Toyota is getting serious about building performance versions of its current models. The manufacturer hopes to turn Toyota Motorsport GmbH, the crew behind the Toyota Le Mans effort and the automaker's now defunct Formula One team, into a factory-backed tuner. TMG currently handles almost everything motorsport related for Toyota with the exception of engine building, and the group is currently hard at work on what could develop into a World Rally Championship entry in the near future.

Lexus fans are abuzz over the sight of a potential new LS-based super sedan, and details about the mystery machine are leaking out across the intertubes. The folks at AutoGuide have somehow managed to get shots of the Nürburgring-running prototype parked in a garage along witha a conveniently displayed spec sheet which gives us a lot more information about the sporty four door shown testing on the 'Ring.

We spy, with the lens of our spy guy, a rather unique Lexus LS that's taken to the track. Spotted lapping Germany's Nürburgring, this particular LS is wearing puffed-out fenders, a strongly styled decklid spoiler, what appears to be a faux nose hiding new bodywork, deep side skirts and a pair of vents on the hood. Something sporty is afoot, and we're itching to know more.